Detonating-fuse for high-explosive projectiles.



I. KNEUBUEHLER. DETONATING FUSE FOR HIGH EXPLOSIVE PROJECTILES.

APPLICAILON FILED APR-27.1916. I

1 l 97, 129 Patented Sept. 5, 1916.

a n s'raans A n ntros.

DETONATIN G-FUSE FOR-HIGH-EXPLOSIVE PROJECTILES.

Specification of Letters Patent.

Application filed April 27, 1916. Serial No. 93,969.

To all whom it may concern-.-

Be it known that I, JOHN KNEUBUEHLER, a citizen of the United States, and of the United States Navy, have invented certain new and useful Improvements in Detonating-Fuses for HighExplosive Projectiles; and I do hereby declare the following to be afull, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.-

This invention relates to detonating fuses for high explosive projectiles.

It is my purpose to provide a detonating fuse embodying an improved construction which will assure safety in handling, safety in storing and delayed action in penetration.

It is my further purpose to provide a detonating fuse having the advantages named and which will be simple in construction, reliable in use and cheap to manufacture.

With the above and other objects in view the invention consists in the details of construction and in the arrangement and com bination of parts to be hereinafter more fully described and particularly pointed out in-the appended claims.

In describing the invention in detail ref-' erence will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and in which- V Figure 1 is a longitudinal section of a detonating fuse constructed in accordance with my invention, the parts being shown in normal position; Fig. 2, a view similar to Fig. 1 with the parts in the position they would occupy when the supplemental or driving charge of the container is exploded, Fig. 3, a view similar to Fig. 1 with the parts in the position they would occupy when the main charge of the container is exploded; Fig. 4, a section on the line 4-4 of Fig 1, and Fig. 5, a section on the line 5-5 of Fig. 1.

Referring to the drawings the improved fuse is shown as comprising a stock A which includes a body portion 10 having its rear end closed by a removable cap 11 while its forward end is provided with a relatively small opening 12. Disposed within the stock A and having its forward end threaded in the opening 12 is a guide tube 14. The rear end of the tube 14 is closed by a plug 15 provided with a firing point 16. Threaded within the tube 14 atthe forward end thereof is a rupturable plug 14 forming an oil center firing pin 17 for a, purpose that will presently appear. Disposed within the tube 14 is a detonating compound container 18 carrying a supplemental or driving charge 19 anda detonating charge 20. The charge 19 is adapted to be fired by the exploslon of a, primer 21 which cooperates with the firing pin 17, while the charge 20 is adapted to be exploded by a primer 22 which cooperates with the firing pin 16. The container 18 is normally held at the rear end of the tube 14 until impact of the projectile occurs by shearing pins 23. Formed on the tube 14 is a flange 24 and mounted thereon is asliding collar 25 which flange and coltrifugal force to throw the locking bolts 28 out of the recesses 30 so that when impact occurs the shearing pins 23 will be severed and the container 18 will move to the forward endof the tube 14 where the primer 21 will be exploded by the firing pin 17 and the charge 19 ignited. The nature of this Patented Sept. 5, 1916.

charge is such that it will not ignite the charge 20 with the result that the container is driven again to the rear of the tube' 14 where the primer 22 is exploded by the firing 'pin 16 and the charge 20 fired. As this charge is one of great power it will rupture the disk 13 and explode the charge of the projectile.

It will be noted that by imparting two movements to the container 18 after impact I greatly delay the firing of the charge 20 and of course the bursting of the projectile during penetration.

In order to prevent the forward or backward movement of the container being retarded or buffed by the air within the tube 14 I provide the latter with suitable small holes 31.

By providingthe firing pin on the threaded plug 14 it will be apparent that by employing a longer plug the action of the fuse is advanced While the employment of a ihorter plug will delay the action of the use.

What is claimed is 1. In a detonating fuse for high eXplo- Y sive projectiles the combination of a fuse stock having an opening in its forward end, a relatively weak closure of said opening, a guide tube in the stock having its forward end in the opening, a detonating compound 1 moves to the forward end of the guide tube upon impact and serving to return the container to therear end of the guide tube, and a main charge carried by the container adapted to be fired when the container is moved to the rear of the guide tube under the influence of the explosion of the driving charge.

2. In a detonating fuse for high explosive projectiles, the combination of a fuse stock, a guide tube mounted in the stock, a detonating compound container movably mounted in the guide tube, a fixed collar on the guide tube, a sliding collar on the guide tube, springs having their ends secured to respective collars, and locking bolts carried by the springs and normally engaged in openings and recesses in the tube and container respectively.

In testimony whereof, I aflix my signature, in the presence of two witnesses.

JOHN KNEUBUEHLER. Witnesses:

C. F. YAHN, J. TAYLOR. 

